Babe Ruth smashed his most homers in a month in September 1927, with 17 homers.

	NAME	HR	MONTH	G	AB	R	H	2B	3B	RBI	BB	HBP	SO	SB	PA	TB	XBH	SH	AVG	OBP	SLG	OPS
1	Babe Ruth B. Ruth	17	September 1927	27	103	29	39	3	1	43	19	0	15	3	126	95	21	4	.379	.475	.922	1.398
2	Babe Ruth B. Ruth	15	June 1930	28	97	43	38	6	0	35	37	0	12	2	137	89	21	3	.392	.560	.918	1.477
3	Babe Ruth B. Ruth	15	August 1929	31	118	31	41	7	2	47	12	0	16	0	133	97	24	3	.347	.408	.822	1.230
4	Babe Ruth B. Ruth	15	May 1928	29	99	32	41	5	4	37	28	1	20	0	129	99	24	1	.414	.547	1.000	1.547
5	Babe Ruth B. Ruth	14	July 1924	37	131	43	59	9	3	40	31	0	16	2	164	116	26	2	.450	.556	.885	1.441
6	Babe Ruth B. Ruth	13	May 1930	28	94	35	36	5	1	33	32	0	14	6	128	82	19	2	.383	.540	.872	1.412
7	Babe Ruth B. Ruth	13	June 1921	29	95	34	38	10	3	28	34	0	18	3	129	93	26	0	.400	.558	.979	1.537
8	Babe Ruth B. Ruth	13	July 1920	34	100	45	44	10	2	33	43	1	19	5	147	97	25	3	.440	.611	.970	1.581
9	Babe Ruth B. Ruth	12	May 1927	28	106	32	37	7	1	34	25	0	18	0	133	82	20	2	.349	.473	.774	1.247
10	Babe Ruth B. Ruth	12	May 1926	28	89	31	32	2	0	30	31	0	10	3	122	70	14	2	.360	.525	.787	1.312
11	Babe Ruth B. Ruth	12	June 1920	29	100	38	45	7	4	37	30	1	17	6	131	96	23	0	.450	.580	.960	1.540
12	Babe Ruth B. Ruth	12	May 1920	23	76	25	25	5	2	26	18	1	12	2	95	70	19	0	.329	.463	.921	1.384
13	Babe Ruth B. Ruth	11	July 1928	35	123	35	44	12	2	30	26	0	19	1	151	93	25	2	.358	.470	.756	1.226
14	Babe Ruth B. Ruth	11	June 1928	24	89	27	23	1	0	21	20	2	16	0	111	57	12	0	.258	.405	.640	1.046
15	Babe Ruth B. Ruth	10	July 1931	31	120	32	44	6	0	41	23	0	11	1	143	80	16	0	.367	.469	.667	1.135
16	Babe Ruth B. Ruth	10	June 1926	26	83	22	35	7	0	32	26	2	11	0	112	72	17	1	.422	.568	.867	1.435
17	Babe Ruth B. Ruth	10	July 1923	31	111	36	51	9	3	27	29	0	18	1	140	96	22	0	.459	.571	.865	1.436
18	Babe Ruth B. Ruth	10	August 1922	24	98	21	34	8	3	29	11	0	20	0	110	78	21	1	.347	.413	.796	1.209
19	Babe Ruth B. Ruth	10	July 1922	30	112	28	35	5	0	26	27	0	19	0	139	70	15	0	.313	.446	.625	1.071
20	Babe Ruth B. Ruth	10	September 1921	28	104	34	38	7	5	28	20	0	16	1	125	85	22	1	.365	.468	.817	1.285
21	Babe Ruth B. Ruth	10	August 1921	28	98	38	44	13	2	34	30	0	13	2	129	91	25	1	.449	.578	.929	1.507
22	Babe Ruth B. Ruth	10	July 1921	24	84	30	30	4	2	31	25	3	11	7	113	68	16	1	.357	.518	.810	1.327
23	Babe Ruth B. Ruth	10	May 1921	28	107	27	33	5	4	29	25	1	19	1	133	76	19	0	.308	.444	.710	1.154
24	Babe Ruth B. Ruth	10	September 1920	25	85	24	32	9	1	21	29	0	14	1	116	73	20	2	.376	.535	.859	1.394
25	Babe Ruth B. Ruth	9	August 1932	29	92	30	37	4	1	26	37	2	13	0	131	70	14	0	.402	.580	.761	1.341